Fan.



F. LAMBERT.

FAN. APPLICATION FILED JULY 25, 1910v 1 096 481 I Patented Mar. 17, 1914 2 SHEETS-SHEET l.

F. LAMBERT.

PAN.

. APPLICATION FILED JULY 25, 1910,

3.,@9@,481 Q Patented Mar. 17, 1914.

, Y 2 BHBBI'S-SHB-IJT 2. z

FRANK LAMBERT, 01E BROOKLYN, NEW" YORK.

FAN.

reenter.

Specification of Letters Patent.

Patented Mar. it, 1914..

Application filed July 25, 1910. Serial No. 573,679.

T 0 all whom it may concern Be it known that I. FRANK LAMBERT, a ates, and a resident citizen of the United St v t Brooklyn, county of Kings, and State certain new of New York, have invented and useful Improvements an Fans, of whlch the following is a specification.

My invention relates to improvementsin fans, particularly of the, type employed for producing circulation of air in warm weather, which fans are usually driven by small electric motors. It is common to impart to suclrfa-ns, in addition to their rotary motion, a bodily oscillation about a single axis usually a vertical. or nearly vertical. axis. According to my present invention I so mount and drive the fan thatit has not only, an oscillation about this vertical or nearly vertical axis, but also an oscillation about a horizontal or nearly horizontal axis; and specifically, the fairhas a bodily oscillation of a nutatory type. Thereby the breeze from the fan is. caused to cover a much larger area than is practicable when a fan oscillates-about a single axis only, and other desirable results are accomplished.

The objects of my invention are to improve fans'of the class described, to cause the broezefrom them to cover a larger area effectively than is practicable when the fan oscillates about a single axis only, and to ,make the mechanism by which the compound oscillation is effected, simple, compact, inexpensive and reliable.

The compound motion given to the fan,

. according to my invention, is accomplished about such by mounting the fan pivotally in an oscillatory support itself pivotally mounted, the

pivotal axis of such support being, at an angle to the axis of oscillation of the fan suppoi;-t,-such angle being usually a rightan'gle, and by providing suitable driving mechanism whereby the fan is :aused to oscillate about both of these axes, besides having its usual rotary motion.

, .4 I will now, proceed to describe my inven 1-1011 with reference to the accompanying invention; Fig.

drawings, illustrating one embodiment thereof, and will then point out the novel features in claims.

In said drawings: Figure 1 shows a front elevation of one form of fan embodying my 2 shows a side view ofthe supporting and driving mechanism of the fan, including the motor; Fig. 3 shows a rear elevation of the same parts; Fig. 4

=erencc to the vertical.

shows a detail sectional elevation of one form of reducing driving gear which may be employed for imparting to the its the compound oscillation characteristic of my present invention; Fig. 5 is a detail front view of the frame member provided with the guide for the pivot-pin of they mechanismwhich oscillates the fan. Fig. 6 shows a vertical section of the reducing driving gear, 011 a plane at right angles to that of Fig. l, and Fig. 7 shows a horizontal section of such driving also ona plane at right angles. to that of Fig. 4.

In the V drawings, wheel or propellenwhecl of my improved fan; 2 the driving motor thereof, which may be ofany usual type, the particular motel illustrated being an electric motor, though I do not limit myself to the use oi any particular type oi? motor.

- 3 designates the spindle of the motor, upon which spindle or driving shaft the fan wheel 1 is mounted. for rotation.

4 designates a. carrying ring to which the motor is pivoted by pivot screws 5, for oscillation about zontal axis.

6 designates a frame member to which the carrying ring 4 is pivoted. by means of a pivot screw 7 and pivot pin 8, for oscillation about a vertical or nearly vertical axis. In the particular construction shown, the angle of the carrying ring l to the vertical is ad justable, the frame member 6 being curved approximately circularly for portion of its length, and being adjustably mounted in a base 9, so that it may be shifted with respect to said base, thereby varying the angle of the axis 7-8 with ref- This latter detail or". mounting the curved frame 6 ustably mounted in the base 9, is not in itself a teatureof my invention, being a feature of 0on struction of one well known type of fan.

It will be clear that by imparting to the horizontal or nearly hori l designates the fan the greater motor 2, and so to its driving shaft 3 and the fan wheel carried thereby, an oscillation about the axis 5-5 and also an oscillation about the axis 7S, a compound oscillation is imparted to the fan wheel, in addition to its regular rotary motion, such oscillation being specificallyof the general nature of a nutatory motion. It will be apparent that because of this compound oscillation given to the fan, the breeze rem the fan will sweep over a much larger area than the,

fan oscillated about a single axis only. Also, since the compound oscillation is progressive the breeie from the fan will have a sweeping action different from that of a fan oscillating about a single axis only, and better adapted for producing a general circulation of air in a room.

Various forms of mechanism may be employed for imparting to the fan, mounted as above described, a motion of rotation or oscillation about its two axes of support. I do not limit myself to any particular mechanism for the purpose, but have illustrated. one such mechanism, well adapted for the purpose and comprising a planetary reduc-.

ing gear comprising an externally-toothed planet gear wheel 13 (Fig. 4), driven by the driving shaft 3 of the fan'motor, as hereinafter described, and intermeshing with an internal gear 12 within a case 10 mounted on a crank arm 11 (Fig. 2) provided with a pin 19 the end of which engages slot 20 in frame member 6. An eccentric 1a is mounted upon the motor spindle 3 and revolves within a bearing at the center of the plan etary gear 13, and thereby imparts a rolling motion to the planetary gear 13 with reference to internal gear 12, whereby the planet- 'ary gear 13 is caused to roll around within the gear 12; and since said gear 13 has a less number of. teeth than has gear 12, the result of this rolling motion of the planetary gear; is to impart a slow rotation to gear 13 with reference to its own axis. Such rotation of the gear 13 is communicated to case 10 through a spider 15 having lugs 16 engaging other lugs 17 carried by the case 10 and having further lugs 18 having a sliding connection with gear 13, through being mounted in notches in the rim of said gear 13. The rotary mot-ion thus imparted to case 10 causes the crank arm 11 to revolve about its pivot 19, so imparting a lateral oscillation, t'. 6., an oscillation about axis 7 8, to the motor and fan, by reason of the lateral throw of'the crank during its rotation, and also imparting a vertical oscillation to the motor, 2'. 6., an oscillation about the axis 5-5, by reason of the up and down throw of the crank in its rotation.

The particular planetary reducing gear above described is a gear which is well known in numerous connections, among others in connection with electric fans for imparting thereto an oscillatory motion about a single axis, but has not been 'used heretofore to my knowledge for imparting a compound oscillation to a The pivot pin 19 of the crank arm may travel up and down in a groove 20 formed,

in the -frame member 6, between stops 21 and 22 adjustably mounted upon said frame member; or, said stops may be set so close together as to prevent any such longitudinal varied at will.

motion of the pivot pin. By varying the distance apart of these stops, the degreeof up and downoscillation of the fanmay be varied at will. The pivot pin 19 may be set at various points along the crank arm 11, a plurality of apertures 23 being provided in this crank arm for this purpose, and thereby the dcgree of oscillation of the motor about the vertical or nearly vertical axis, 2 e., theaxis 78,- as well as the degree of oscillation about the horizontal axis, may be to the particular means illustrated for vary.- ing the degree of oscillation about either axis.

The fan may be provided with the usual tan-guard 24, which, being carried by the motor 2, as is customary in electric fans, will oscillate with said motor and therefore need be no larger than the guards of ordinary electrio fans.

While I have illustrated my fan as mount- I ed upon a pedestal base, it will be obvious that it may be mounted in various ways.

But I do not limit myself It is well adapted, for example, for use'as a ceiling fan, being suspended from the ceiling, in which case the axis 7-8 will customarily be horizontal or nearly so, the axis of rotation of the driving shaft or spindle 3 of the motor being then vertical or nearly so.

It is obvious that the details illustrated and described above for supporting the motor for bodily oscillation or rotation about a plurality of axes, and for imparting such oscillation to the motor, may be varied very greatly without departing from the spirit and scope of my-invention, which is not limited to any such details as are illustrated and described.

By'changing the position in the same direction of both of the sliding stops 21 and 22, I can vary the field of nutatory oscillation of the fan.

What I claim is 1. A fan comprising in combination a fan-wheel, a motor for driving the same, a carrier to which said motor is pivoted, a

supportv to which said carrier is pivoted, a

crank, the free end of which is mounted to move with bodily movement of sard motor, and reducing transmission mechanism imparting motion' from said motor to said crank.

2. A fan comprising in combination a fan-wheel, a motor for'driving the same, a carrier to which said motor is pivoted, a support to which said carrier is pivoted, a crank, the tree end-of which is mounted to move with bodily movement of said motor, the pivot of said crank mounted for motion in a restrained path, and transmission mechanism driven by said motor arranged to im part motion to the crank.

3. A. fan comprising in combination a fan-Wheel, a motor for driving the same,'.& by said motor and arranged to impart mooarrier to which said motor is pivoted, a tion to said. crank.

support to which said carrier is pivoted, In testimony whereof I have signed this said supporthaving in it a guide groove, specification in the presence of two subscriba crank, the free end of which is mounted ing Witnesses. I to move with bod11y move1nent of said mo- FRANK LAMBERT. tor, said crank having a pin mounted to 11love in said guide groove, adjustable means Vitnesses:

limiting the motion of such pin in said H. M. MARBLE,

10 groove and transmission mechanism driven D. A. DAVIES. 

